Short Answer 
Finance involves managing money across personal, corporate, and public domains. Demarco and Tanya assessed several payment options and chose Option A for its stability, allowing better financial planning and long-term security as they plan to live together permanently.
Step 1: Understanding Finance
Finance is the study and management of money and investments. It encompasses the processes involved in managing funds, including the following categories:
- Personal Finance: Management of individual or household financial activities.
- Corporate Finance: Financial activities related to running a corporation.
- Public Finance: Management of funds by public authorities.
Step 2: Analyzing the Options
Demarco and Tanya need to choose the best payment option for their situation. The options include:
- Option A: A stable payment plan that remains unchanged.
- Option B: A lower initial payment but with expected increases over time.
- Option C: A plan that requires repayment within 8 years.
Considering their circumstances, options B and C may not be ideal due to potential future financial increases and their desire to live together permanently.
Step 3: Making the Decision
After evaluating the options, Demarco and Tanya decide that Option A is the best choice. This decision is based on:
- The stability of the payments allows for better financial planning.
- Avoidance of increasing payments, which can create financial strain.
- The need for long-term financial security as they intend to live together permanently.
Thus, choosing Option A aligns with their financial goals and lifestyle preferences.